Iran parades troops and weapons through Tehran and holds naval displays in the Gulf to commemorate the start of the 1980-88 war with Iraq, as tensions rise with the U.S. after an attack on Saudi oil facilities.
Days after millions of young people took to the streets worldwide to demand emergency action on climate change, leaders gathered at the United Nations to try to inject fresh momentum into stalling efforts to curb carbon emissions.
Holidaymakers hit by the collapse of Thomas Cook desperately scrambled for information on how to get home, as the demise of the world's oldest tourist firm left an estimated 600,000 people stranded worldwide.
UFO enthusiasts drawn by alien-themed festivities poured into rural Nevada near the Area 51 U.S. military base, but fears of a mass raid on the remote site or a public safety crisis proved unfounded, with only five people arrested.
Hundreds of thousands of students, office workers and other protesters took to the streets across the globe on Friday to demand urgent action to avert an environmental catastrophe from world leaders gathering for a U.N. climate summit.